Mailbird icon

MailBird. Mobile and desktop, app icon.

Recently I have gained a remarkable application calls "Mailbird" http://www.getmailbird.com/. I've been following the development of this application, and waited for an opportunity to buy it. Finally it came out, but I did not like it's icon at all. That's why I made ​​my version of the icon. I wonder what you think about it?